background

(UA) United Airlines 643 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(SNA) John Wayne Airport

Santa Ana, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
51
84%
Late
7
11%
Very Late
2
3%
Excessive
1
2%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
21
Codeshares
0
Average Delay (min.)
17.38095238095238
Standard Deviation
16.2
Min
0
Max
66

UA 643 On-Time Performance Details

Overall Rating
4.6 of 5
Very Good
Percentage On-Time 84%
Average Delay Time 17.38095238095238 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.6 shows that this flight has on-time performance characteristics better than 91% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
4.5 of 5
Good
Average Delay Time 17.38095238095238 min
This flight has an average delay of 17.38095238095238 minutes with a standard deviation of 16.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.

Other Stops for UA 643